CONTROLLING METHOD FOR SINGLE-PHASE BIDIRECTIONAL INVERTER AND DEVICE THEREOF

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

16/907,300

專利證號

US 11,362,599

專利獲證名稱

CONTROLLING METHOD FOR SINGLE-PHASE BIDIRECTIONAL INVERTER AND DEVICE THEREOF

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2022/06/14

技術說明

一種單相雙向換流器控制方法，其係用於一單相雙向換流裝置，且單相雙向換流裝置包含一開關及一電感。單相雙向換流器控制方法包含提取步驟、計算步驟及整合步驟。提取步驟輸入電流命令至開關，並取得通過電感之一電流，且將電流分段線性化提取電感之激磁電感與去磁電感。計算步驟利用開關之切換責任比計算激磁電感之電流的變化量與計算去磁電感之電流的變化量。整合步驟將激磁電感之電流的變化量與去磁電感之電流的變化量整合而得到開關於下一週期之另一切換責任比。藉此，有利於改善換流器的電流追蹤能力，並提高切換責任比的精準度。 A control method of a single-phase bidirectional inverter is for the single-phase bidirectional inverter, and the single-phase bidirectional inverter includes a switch and an inductor. The single-phase bidirectional inverter control method includes an extraction step, a calculation step, and an integration step. The extraction step inputs a current command to the switch and obtains a current through the inductor. The current was piecewise linearized to extract a magnetizing inductance and a demagnetizing inductance of the inductor. The calculation step uses a duty ratio of the switch to calculate the change amount of the current of the magnetizing inductance and the change amount of the current of the demagnetizing inductance. The integration step integrates the change amount of the current of the magnetizing inductor and the change amount of the current of the demagnetizing inductor to obtain another duty ratio of the switch in the next cycle. Therefore, it is favorable for improving the ability of current tracking converter and the accuracy of the duty ratio in the inverter.

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